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High‐resolution 15 N solid‐state NMR investigations on borazine‐based precursors
Author(s) -
Toury Bérangère,
Gervais Christel,
Dibandjo Philippe,
Cornu David,
Miele Philippe,
Babonneau Florence
Publication year - 2004
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.612
Subject(s) - borazine , chemistry , solid state , nitrogen atom , polymerization , condensation polymer , crystallography , solid state nuclear magnetic resonance , stereochemistry , organic chemistry , polymer , group (periodic table) , nuclear magnetic resonance , physics , boron nitride
Abstract Reference compounds based on borazine units and polyborylborazines have been characterized by 15 N solid‐state NMR. The various nitrogen sites (B 3 N, B 2 NH, B 2 NX (X = H, Me, i Pr), BN(H)X and BNX 2 (X = Me, i Pr) have been discriminated according to their cross‐polarization behaviour and chemical shift values, which range from −265 to −350 ppm. This has permitted the elucidation of the polymerization mechanism associated with the polycondensation of two borazine‐based derivatives. In particular, this technique appears to be a powerful investigation tool for finding whether the B 3 N 3 rings are linked through three‐atom NBN aminoboryl bridges or connected by direct BN bonds. Copyright © 2004 John Wiley & Sons, Ltd.